[INFO] fetching crate polkadot-ckb-merkle-mountain-range 0.8.1...
[INFO] testing polkadot-ckb-merkle-mountain-range-0.8.1 against 1.95.0 for beta-1.96-2
[INFO] extracting crate polkadot-ckb-merkle-mountain-range 0.8.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate polkadot-ckb-merkle-mountain-range 0.8.1
[INFO] finished tweaking crates.io crate polkadot-ckb-merkle-mountain-range 0.8.1
[INFO] tweaked toml for crates.io crate polkadot-ckb-merkle-mountain-range 0.8.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate polkadot-ckb-merkle-mountain-range 0.8.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 123 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] [stderr]       Adding faster-hex v0.8.1 (available: v0.10.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded faster-hex v0.8.1
[INFO] [stderr]   Downloaded blake2b-rs v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23657d5d7e0af9cab68c6c5ad01a4f0d6112a022092f4d1dac9d1bf9965569ff
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[INFO] running `Command { std: "docker" "inspect" "23657d5d7e0af9cab68c6c5ad01a4f0d6112a022092f4d1dac9d1bf9965569ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23657d5d7e0af9cab68c6c5ad01a4f0d6112a022092f4d1dac9d1bf9965569ff", kill_on_drop: false }`
[INFO] [stdout] 23657d5d7e0af9cab68c6c5ad01a4f0d6112a022092f4d1dac9d1bf9965569ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8b62b806d1f602bd475471d8aaa91df479efd3506f52b4beaf1e9f9ab68141e
[INFO] running `Command { std: "docker" "start" "-a" "e8b62b806d1f602bd475471d8aaa91df479efd3506f52b4beaf1e9f9ab68141e", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling polkadot-ckb-merkle-mountain-range v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "e8b62b806d1f602bd475471d8aaa91df479efd3506f52b4beaf1e9f9ab68141e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b62b806d1f602bd475471d8aaa91df479efd3506f52b4beaf1e9f9ab68141e", kill_on_drop: false }`
[INFO] [stdout] e8b62b806d1f602bd475471d8aaa91df479efd3506f52b4beaf1e9f9ab68141e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c6b1ab7dffe9474fc697f24a9a3fb039bfca78c336acb0893aae556b7dc2db7
[INFO] running `Command { std: "docker" "start" "-a" "6c6b1ab7dffe9474fc697f24a9a3fb039bfca78c336acb0893aae556b7dc2db7", kill_on_drop: false }`
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[INFO] [stderr]    Compiling polkadot-ckb-merkle-mountain-range v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `gen_range` exists for struct `ThreadRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/tests/test_mmr.rs:280:32
[INFO] [stdout]     |
[INFO] [stdout] 280 |         let leaves_count = rng.gen_range(1..count - 1);
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.6/src/rngs/thread.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 | pub struct ThreadRng {
[INFO] [stdout]     | -------------------- doesn't satisfy `ThreadRng: proptest::prelude::RngCore` or `ThreadRng: proptest::prelude::Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `ThreadRng: proptest::prelude::RngCore`
[INFO] [stdout]             which is required by `ThreadRng: proptest::prelude::Rng`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout]   1 + use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `gen_range` exists for struct `ThreadRng`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/tests/test_node_mmr.rs:347:32
[INFO] [stdout]     |
[INFO] [stdout] 347 |         let leaves_count = rng.gen_range(1..count - 1);
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.8.6/src/rngs/thread.rs:62:1
[INFO] [stdout]     |
[INFO] [stdout]  62 | pub struct ThreadRng {
[INFO] [stdout]     | -------------------- doesn't satisfy `ThreadRng: proptest::prelude::RngCore` or `ThreadRng: proptest::prelude::Rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `ThreadRng: proptest::prelude::RngCore`
[INFO] [stdout]             which is required by `ThreadRng: proptest::prelude::Rng`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Rng` which provides `gen_range` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout]   1 + use rand::Rng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polkadot-ckb-merkle-mountain-range` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6c6b1ab7dffe9474fc697f24a9a3fb039bfca78c336acb0893aae556b7dc2db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6b1ab7dffe9474fc697f24a9a3fb039bfca78c336acb0893aae556b7dc2db7", kill_on_drop: false }`
[INFO] [stdout] 6c6b1ab7dffe9474fc697f24a9a3fb039bfca78c336acb0893aae556b7dc2db7
